Patents by Inventor Hidenaga Mitani

Hidenaga Mitani has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Out-of-circuit ball preventing structure for ball screw nut
    Patent number: 5586469
    Abstract: In an out-of-circuit ball preventing structure for a ball screw nut having a plurality of ball circulation circuits over an inner circumferential surface thereof, an oblique diameter of an out-of-circuit groove is made smaller than an oblique diameter of an in-circuit groove.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: December 24, 1996
    Assignee: NSK Ltd.
    Inventors: Hidenaga Mitani, Hiroshi Morimoto